<?php

namespace App\Handlers;

use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Redis;

class SwitchHandler
{
    public static function analysisContent($topic, $content){
        $gatewayTmp = explode('/', $topic);
        $gatewayCode = $gatewayTmp[1];

        $res = json_decode($content,1);

        $uniqueCode = $res['SSN'];

        $dataJson = Redis::get($uniqueCode);
        if (empty($dataJson)) {
            $param = [];
        } else {
            $param = json_decode($dataJson, true);
        }

        $info = $res['DataUp04'];
        //机位
        $addr = substr($info,12,2);
        $addrKey = $gatewayCode.'_'.$uniqueCode."_addr";
        Redis::set($addrKey, $addr);
        Redis::set($uniqueCode."_addr", $addr);

        //起始地址
        $start = hexdec(substr($info,4,4));
        //DataUp04
        $DataUp04 = str_split(substr($info,18),4);
        // var_dump('分解：'.implode(',',$DataUp04).'</br>');
        $arr = [];
        foreach($DataUp04 as $key=>$val){
            $arr[$start+$key] = $val;
        }
        // var_dump($arr);
        if(isset($arr[16]) && isset($arr[17])){//16~17 电流
            // $Current = intval($arr[16]).'.'.intval($arr[17]);
            $Current = self::hexTo32Float($arr[16].$arr[17]);
            $param['current'] = $Current;
        }
        if(isset($arr[19]) && isset($arr[20])){//19~20 电压
            // $Voltage = intval($arr[19]).'.'.intval($arr[20]);
            $Voltage = self::hexTo32Float($arr[19].$arr[20]);
            $param['voltage'] = $Voltage;
        }
        if(isset($arr[21])){//21 温度
            $Temp = hexdec($arr[21]);
            $param['temp'] = $Temp;
        }
        if(isset($arr[22])&&isset($arr[23])){//22~23 功率
            // $Power = intval($arr[22]).'.'.intval($arr[23]);
            $Power = self::hexTo32Float($arr[22].$arr[23]);
            $param['power'] = $Power;
        }
        if(isset($arr[24])&&isset($arr[25])){//24~25 有功能量（电量）
            $electricQuantity = self::hexTo32Float($arr[24].$arr[25]);
            $param['electricQuantity'] = $electricQuantity;
        }

        $pnKey = $uniqueCode."_p";
        $pn = Redis::get($pnKey);
        if (intval($pn) == 1) {
            if(isset($arr[29])){//29 开关状态 0：断开 1：闭合 2：分闸（分闸后不可手动合闸）
                $SwitchStatus = intval($arr[29]);
                $param['status'] = $SwitchStatus;
            }
        } else if (intval($pn) == 3) {
            if(isset($arr[59])){//29 开关状态 0：断开 1：闭合 2：分闸（分闸后不可手动合闸）
                $SwitchStatus = intval($arr[59]);
                $param['status'] = $SwitchStatus;
            }
        }
        
        Redis::set($uniqueCode, json_encode($param));
    }

    protected static function hexTo32Float($strHex) {
        $v = hexdec($strHex);
        $x = ($v & ((1 << 23) - 1)) + (1 << 23) * ($v >> 31 | 1);
        $exp = ($v >> 23 & 0xFF) - 127;
        $r = $x * pow(2, $exp - 23);
        return round($r,3);
    }

    /**
     *
     * @param [type] $ssn
     * @param [type] $pn
     * @param [type] $address 地址位
     * @param [type] $status 状态
     * @return void
     */
    public static function getSwitchCode($pn, $ssn, $status){
        $addrKey = $ssn."_addr";
        $address = Redis::get($addrKey);

        if ($pn == 1) {
            $start = '01D0'; //起始位
        } else if ($pn == 3) {
            $start = '0250'; //起始位
        } else {
            return false;
        }

        switch ($status) {
            case '1': //闭合/合闸
                $MBAP = $start.'0006'.$address.'06'.$start.'0001';
                break;
            case '3': //分闸不可手动合闸
                $MBAP = $start.'0006'.$address.'06'.$start.'0003';
                break;
            case '4': //分闸
                $MBAP = $start.'0006'.$address.'06'.$start.'0004';
                break;
            default:
                # code...
                break;
        }
        $CRC = self::modbus($MBAP);
        $str = '{"SSN":"'.$ssn.'","MRaw_Request":"'.$CRC.$MBAP.'"}';
        return $str;
    }

    public static function modbus($modbus_msg)
    {

        $crctab16 = [0X0000, 0XC0C1, 0XC181, 0X0140, 0XC301, 0X03C0, 0X0280, 0XC241,
            0XC601, 0X06C0, 0X0780, 0XC741, 0X0500, 0XC5C1, 0XC481, 0X0440,
            0XCC01, 0X0CC0, 0X0D80, 0XCD41, 0X0F00, 0XCFC1, 0XCE81, 0X0E40,
            0X0A00, 0XCAC1, 0XCB81, 0X0B40, 0XC901, 0X09C0, 0X0880, 0XC841,
            0XD801, 0X18C0, 0X1980, 0XD941, 0X1B00, 0XDBC1, 0XDA81, 0X1A40,
            0X1E00, 0XDEC1, 0XDF81, 0X1F40, 0XDD01, 0X1DC0, 0X1C80, 0XDC41,
            0X1400, 0XD4C1, 0XD581, 0X1540, 0XD701, 0X17C0, 0X1680, 0XD641,
            0XD201, 0X12C0, 0X1380, 0XD341, 0X1100, 0XD1C1, 0XD081, 0X1040,
            0XF001, 0X30C0, 0X3180, 0XF141, 0X3300, 0XF3C1, 0XF281, 0X3240,
            0X3600, 0XF6C1, 0XF781, 0X3740, 0XF501, 0X35C0, 0X3480, 0XF441,
            0X3C00, 0XFCC1, 0XFD81, 0X3D40, 0XFF01, 0X3FC0, 0X3E80, 0XFE41,
            0XFA01, 0X3AC0, 0X3B80, 0XFB41, 0X3900, 0XF9C1, 0XF881, 0X3840,
            0X2800, 0XE8C1, 0XE981, 0X2940, 0XEB01, 0X2BC0, 0X2A80, 0XEA41,
            0XEE01, 0X2EC0, 0X2F80, 0XEF41, 0X2D00, 0XEDC1, 0XEC81, 0X2C40,
            0XE401, 0X24C0, 0X2580, 0XE541, 0X2700, 0XE7C1, 0XE681, 0X2640,
            0X2200, 0XE2C1, 0XE381, 0X2340, 0XE101, 0X21C0, 0X2080, 0XE041,
            0XA001, 0X60C0, 0X6180, 0XA141, 0X6300, 0XA3C1, 0XA281, 0X6240,
            0X6600, 0XA6C1, 0XA781, 0X6740, 0XA501, 0X65C0, 0X6480, 0XA441,
            0X6C00, 0XACC1, 0XAD81, 0X6D40, 0XAF01, 0X6FC0, 0X6E80, 0XAE41,
            0XAA01, 0X6AC0, 0X6B80, 0XAB41, 0X6900, 0XA9C1, 0XA881, 0X6840,
            0X7800, 0XB8C1, 0XB981, 0X7940, 0XBB01, 0X7BC0, 0X7A80, 0XBA41,
            0XBE01, 0X7EC0, 0X7F80, 0XBF41, 0X7D00, 0XBDC1, 0XBC81, 0X7C40,
            0XB401, 0X74C0, 0X7580, 0XB541, 0X7700, 0XB7C1, 0XB681, 0X7640,
            0X7200, 0XB2C1, 0XB381, 0X7340, 0XB101, 0X71C0, 0X7080, 0XB041,
            0X5000, 0X90C1, 0X9181, 0X5140, 0X9301, 0X53C0, 0X5280, 0X9241,
            0X9601, 0X56C0, 0X5780, 0X9741, 0X5500, 0X95C1, 0X9481, 0X5440,
            0X9C01, 0X5CC0, 0X5D80, 0X9D41, 0X5F00, 0X9FC1, 0X9E81, 0X5E40,
            0X5A00, 0X9AC1, 0X9B81, 0X5B40, 0X9901, 0X59C0, 0X5880, 0X9841,
            0X8801, 0X48C0, 0X4980, 0X8941, 0X4B00, 0X8BC1, 0X8A81, 0X4A40,
            0X4E00, 0X8EC1, 0X8F81, 0X4F40, 0X8D01, 0X4DC0, 0X4C80, 0X8C41,
            0X4400, 0X84C1, 0X8581, 0X4540, 0X8701, 0X47C0, 0X4680, 0X8641,
            0X8201, 0X42C0, 0X4380, 0X8341, 0X4100, 0X81C1, 0X8081, 0X4040];

        $hexdata = pack("H*", $modbus_msg);
        $nLength = strlen($hexdata);
        $fcs = 0xFFFF;
        $pos = 0;
        while ($nLength > 0) {
            $fcs = ($fcs >> 8) ^ $crctab16[($fcs ^ ord($hexdata[$pos])) & 0xFF];
            $nLength--;
            $pos++;
        }
        $crc_semi_inverted = sprintf("%04x", $fcs);
        $crc_modbus = substr($crc_semi_inverted, 2, 2) . substr($crc_semi_inverted, 0, 2);
        return $crc_modbus;
    }

}